Dillon O'Leary is being kept in a medically induced coma.
"I mean, he was perfectly fine," explained Richard Pawlasek, Dillon's uncle. "Then he told his dad he felt like his head was going to explode. He threw up on the field and just collapsed. It just came out of nowhere!"
Pawlasek said doctors don't know why Dillon collapsed or what caused it. He said they have to wait for the swelling to go down and fluid to drain before they can diagnose a cause.
"You would never really expect or think of anything like that happening to any kid, especially one that's in such good condition," Pawlasek said.
There is a GoFundMe page called Prayers for Dillon set up by his uncle to help the family with medical expenses.
"We really appreciate the support," Pawlasek said. "It's been more than any family and one child could wish for."
Dillon has undergone several procedures already to try to relieve pressure on his brain. On Wednesday, he was still listed in critical condition.
"I have a lot of faith he's gonna be ok," Pawlasek said. "It's just a minor setback for a major comeback for this kid."